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87564 (2000 RQ9)
Classification: Main-belt Asteroid          SPK-ID: 2087564
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2984614872542497 5.1185e-08  
a 2.750632559050617 1.3321e-08 au
q 1.929674674586407 1.4297e-07 au
i 12.20156322391717 5.1084e-06 deg
node 55.84144897685255 2.191e-05 deg
peri 323.3586396284592 2.2949e-05 deg
M 171.3964545359611 6.4511e-06 deg
tp 2458407.183240597350
(2018-Oct-15.68324060)
2.8431e-05 TDB
period 1666.277369378332
4.56
1.2104e-05
3.314e-08
d
yr
n .2160504647160345 1.5694e-09 deg/d
Q 3.571590443514827 1.7296e-08 au
  Orbit Determination Parameters
   # obs. used (total)      827  
   data-arc span      9282 days (25.41 yr)  
   first obs. used      1995-10-16  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4661  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:25:17  

Additional Information
 Earth MOID = .946796 au 
 Jupiter MOID = 1.92983 au 
 T_jup = 3.248 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.08   n/a E2021B10  
diameter diameter 2.284 km 0.167 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.23895 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.407   0.126 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

87564 (2000 RQ9)          Discovered 2000-Sep-01 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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